package com.web.controller;

import com.alibaba.fastjson2.JSON;
import com.web.entity.ResponseResult;
import com.web.entity.Student;
import com.web.service.StudentIdService;
import com.web.service.impl.StudentIdServiceImpl;
import com.web.service.impl.StudentServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author lenovo
 * @Description
 * @Date2025-3-1 15:06
 */
@WebServlet("/getStudentById")
public class StudentIdServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        //设置相应类型
        resp.setContentType("application/json;charset=UTF-8");

        // 获取参数
        String idStr = req.getParameter("id");
        int id = Integer.parseInt(idStr);

        // 调用服务层
        StudentIdService studentIdService = new StudentIdServiceImpl();
        Student student = studentIdService.getStudentById(id);

        // 返回结果
        String str = JSON.toJSONString(new ResponseResult(200, "ok", student));
        resp.getWriter().write(str);
    }
}
